HTGR Knowledge Base

Conference Article: Decontamination and high temperature materials

Schenker, E.; Ullrich, G.; Hanulik, J.; Waeber, W.B.; Wiedemann, K.H. (Eidgenoessisches Inst. fuer Reaktorforschung, Wuerenlingen (Switzerland))

Abstract

Our R&D-programme on development of decontamination methods from primary circuit of helium cooled high temperature reactors comprises of the following major points: Effects of fission products and other helium impurities on the materials. Development and optimization of the chemical decontamination solutions and also the conditioning of the used solutions. Materials research in support of the programme. Some highlights on the programme and on the results were presented. The total programme and first results were reported earlier, therefore we limit this presentation to only some major points: Effects of fission products and other helium impurities on the materials. Development and optimization of the chemical decontamination solutions and also the conditioning of the used solutions. Materials research in support of the programme.

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key words: decontamination; helium; htgr type reactors; optimization; primary coolant circuits; radionuclide migration; reactor materials; solutions; testing; cleaning; cooling systems; dispersions; elements; gas cooled reactors; graphite moderated reactors; homogeneous mixtures; mixtures; nonmetals; rare gases; reactor components; reactor cooling systems; reactors
Reference:
Specialists meeting on coolant chemistry, plate-out and decontamination in gas-cooled reactors Juelich, Federal Republic of Germany 2-4 December 1980
International Atomic Energy Agency, Vienna (Austria)
IWGGCR--2, pp:114-118